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The Serial Peripheral Interconnect (SPI) bus is a ubiquitous de facto standard found in many embedded systems produced today. The Linux kernel has long supported this bus via a comprehensive framework which supports both SPI master and slave devices. The session will explore the abstractions the framework provides to expose this hardware to both kernel and userspace clients. In addition, we will discuss subtle features of the SPI subsystem that may be used to satisfy hardware and performance requirements in an embedded Linux system.

Matt Porter has been a Linux user for over 25 years and is the CTO of Konsulko Group. At Konsulko, he works on design and development of embedded systems incorporating a variety of FOSS components. He enjoys contributing to many FOSS projects such as the Linux kernel and OpenEmbedded... Read More →